HyeonDo Pipe Layout & Template

HyeonDo is a pipe layout and sheet metal flat pattern calculator for pipefitters and sheet metal workers. Choose a shape, enter measurements, and review pipe templates, cone layouts, cut lines, individual parts and coordinate tables. Print a 1:1 pipe template or export DXF for your cutting workflow.

• 28 calculators: concentric and eccentric reducers, cone roofs, pipe branches, miter cuts, segmented elbows, round-to-rectangular transitions, cylinders, sphere and cap gores, and more
• Field tools: simple and rolling offsets, material weight, unit conversion, elbow measurements, bolt circles and circular inserts
• Cutting lists: plan stock lengths and quantities with kerf and end allowances, and review offcuts and unplaced pieces
• Local jobs: keep inputs, results, titles, notes and job quantities on your device
• Export: PDF reports, tiled 1:1 PDFs, SVG, DXF and CSV files, with your device's sharing options
• Millimetres and inches, decimal and fractional input, and Korean, English, Spanish, Brazilian Portuguese, Japanese and Traditional Chinese

Calculations, drawings and saved work are available offline. The app is free and contains ads. You can remove ads with a one-time purchase in Settings. Ads need an internet connection; sending exported files depends on the app you choose for sharing.

Check the measurement references and assumptions for each calculation. Sphere and cap gores are identified as approximations. Results follow your inputs and geometric models; they do not certify fabrication tolerances, material deformation, weld shrinkage, pressure or load suitability. Print 1:1 templates at actual size and measure the check line before use.